Shares of Avenue Supermarts, the operator of supermarket retail chain D-Mart, on Tuesday, made a bumper debut on BSE, as its shares got listed at Rs 604.40, up 102 percent over the issue price of Rs 299. It later soared 105.68 per cent to Rs 616.25. Do you know who is the man behind D-Mart? It is none other than Radhakishan Damani.&nbsp;Here&rsquo;s all you want to know about the man: